package com.web22_2_1.service;

import com.web22_2_1.entity.Grade;
import com.web22_2_1.entity.vo.GradeVO;

import java.util.List;

public interface GradeService {
    List<GradeVO> listAll();
    GradeVO getGradeById(int gradeId);
    boolean addGrade(GradeVO grade);
    boolean updateGrade(GradeVO grade);
    boolean deleteGrade(int gradeId);
}
